<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>D3交互式数据可视化</title>
</head>
<body>
	

	<script src="js/d3.js"></script>
	<script>
		const width = 500;
		const height = 500;
		var svg = d3.select("body")
								.append("svg")
								.attr("width",width)
								.attr("height",height)
		svg.append("circle")
				.attr("cx","100px")
				.attr("cy","100px")
				.attr("r","50px")
				.attr("fill","skyblue")
	</script>
</body>
</html>